How do I judge Audio levels being exchanged among the players?

Answer:

Once the Session Leader Record-enables a track, the audio input meters are activated. The Leader clicks the Record-enable button on each Player’s track and the input meter on each track indicates each player's level coming into eJamming. Levels in the GREEN are a decent signal, YELLOW levels indicate an optimal or "hot" signal, and RED indicates they are clipping, and that Player needs to reduce their gain.